下列各式,是同类项的一组为( )
A:a2b与﹣ab2
B:xy2与﹣ 35 y2x
C:5x与xy
D:5ab与6a2b
My homework _______ most of my free time.
本诗选自《诗经》,《诗经》分“风”“雅”“颂”三个部分,本诗属于____